/*
 * [New BSD License]
 * Copyright (c) 2011-2012, Brackit Project Team <info@brackit.org>  
 * All rights reserved.
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *     * Redistributions of source code must retain the above copyright
 *       notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above copyright
 *       notice, this list of conditions and the following disclaimer in the
 *       documentation and/or other materials provided with the distribution.
 *     * Neither the name of the Brackit Project Team nor the
 *       names of its contributors may be used to endorse or promote products
 *       derived from this software without specific prior written permission.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
package org.brackit.xquery.function;

import org.brackit.xquery.ErrorCode;
import org.brackit.xquery.QueryException;
import org.brackit.xquery.atomic.Atomic;
import org.brackit.xquery.atomic.QNm;
import org.brackit.xquery.xdm.AbstractItem;
import org.brackit.xquery.xdm.Function;
import org.brackit.xquery.xdm.Signature;
import org.brackit.xquery.xdm.type.FunctionType;
import org.brackit.xquery.xdm.type.ItemType;

/**
 * 
 * @author Sebastian Baechle
 * 
 */
public abstract class AbstractFunction extends AbstractItem implements Function {
	private final QNm name;

	private final Signature signature;

	private final boolean isUpdating;

	private final boolean isBuiltIn;

	public AbstractFunction(QNm name, Signature signature, boolean isBuiltIn) {
		this.name = name;
		this.signature = signature;
		this.isUpdating = false;
		this.isBuiltIn = isBuiltIn;
	}

	public AbstractFunction(QNm name, Signature signature, boolean isBuiltIn,
			boolean isUpating) {
		this.name = name;
		this.signature = signature;
		this.isUpdating = isUpating;
		this.isBuiltIn = isBuiltIn;
	}

	@Override
	public final QNm getName() {
		return name;
	}

	@Override
	public final Signature getSignature() {
		return signature;
	}

	@Override
	public boolean isUpdating() {
		return isUpdating;
	}

	@Override
	public boolean isBuiltIn() {
		return isBuiltIn;
	}

	@Override
	public final String toString() {
		return name.toString() + signature;
	}

	@Override
	public Atomic atomize() throws QueryException {
		throw new QueryException(ErrorCode.ERR_ITEM_HAS_NO_TYPED_VALUE,
				"The atomized value of function items is undefined");
	}

	@Override
	public ItemType itemType() throws QueryException {
		return new FunctionType(signature);
	}

	@Override
	public boolean booleanValue() throws QueryException {
		throw new QueryException(ErrorCode.ERR_INVALID_ARGUMENT_TYPE,
				"The effective boolean value of function items is undefined");
	}
}
